Process of and machine for making pipe-hooks



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(No Model.) H. LILLEY. PROCESS 01? AND MACHINE FOR MAKING PIPE 500%. No. 425,232. Patented Apr. 8,1890.

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H. LIL'LEY. PROOESS OF AND MACHINE FOR MAKING PIPE HOOKS. No. 425,232. Patented Apr. 8, 1890.

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PROCESS OF AND MACHINE FOR MAKING BIPE'HOOKS. No. 425,232. 2 Patentd Apr. 8,1890.

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ATTGHNEY UNITE STATES HENRY LILLEY, OF PHILADELPHIA, PENNSYLVANIA.

PROCESS OF AND MACHINE FORMAKlNG PIPE-HOOKS.

SPECIFICATION forming part of Letters Patent No. 425,232, dated April 8, 1890.

Application filed January 28, 1890. Serial No. 338,364. (No model.)

the art to which the same belongs to make and use the same. i

My invention relates, first, to a process for cutting the blanks from abar or plate of iron or steel. The second part relates to a machine for twisting the blanks. The third part relates to a machine for rolling and flattening a part of the blank forming the hook.

The first part of my invention consists in cutting the blanks from a flat metal plate, and is an improvementon Patent No. 890,491, granted to me October 2, 1888.

The second part consists in a combination of mechanisms for twisting the blanks at a part which is afterward bent to form the book.

The third part consists in the combination of a die and roller by which the blanks are flattened at a part which is afterward bent to form the hook.

The object of my invention is to manufacture pipe-hooks by machinery at small cost for labor, which I attain .by the process of cutting blanks and mechanism illustrated in the accompanying drawings, in which Figure 1 represents a fiat metal bar, showing the notch cut that forms the heel and the out which serves the blank from the bar. Fig. 2 represents the blank as cut from Fig. 1. Fig. 3 represents the blank shaped by the clamp-die and shows by dotted line where the blank is twisted. Fig. 4 represents the finished pipe-hook as made from a twisted blank. Fig. 5 is a diagram showing the manner of cuttingblan {S for twisting from a metal plate. Fig. 6 is a diagram showing the manner of cutting blanks for rolling from a metal plate. Fig. 7 represents a blank as cut from Fig. 6. Figs. 8 and 9 represent a blank cut from Fig. 6 after rolling. Fig. 10 represents a finished pipe-hook cut from Fig. 6. Fig. 11 represents a top view of my improved machine for shaping and twisting blanks, Fig. 3. Fig. 12 is a side view of Fig. 11. Fig. 13 is a view of the twistin g-l ever and slide. Fig. 14 is a view of the bed in which is fitted slides Figs. 13 and 17. Fig. 15 is a view of the lever for operating the twist-lever. Fig. 16 represents a part of the clamping and forming die. Fig. 17 represents the slide to which is fastened the clamp or die Fig. 16. Fig. 18 is a side View of my improved twisting and rolling machine, showing the opposite side from that shown in Fig. 12. Fig. 19 is an end View of the machine. Fig. 20 is a longitudinal sectional view of the die for rolling the blanks shown in Figs. 7, S, and 9. Fig. 21 is a top view of the die shown in section, Fig. 20. Fig. 22 is views of part of the clamping-die, which in connection with Fig. 16 forms the shaping and holding die while twisting the blank shown in Fig.3.

Similar letters of reference in the drawings represent same parts in the several views.

As above stated, the first part of my invention is an improvement on Patent No. 390,491, which present improvement enables me to cut blanks from metal plates and form these blanks by machinery into hooksthat may be used for the largest size pipes that are supported by hooks.

A represents the hook-blank, which, when out from abar, is as shown in Figs. 1 and 2. The only wasteis that-part cutfrom notch B. When out from a metal plate as shown in Fig. 5, the waste will be the part marked D and D. lVhen cut from a plate as shown in Fig. 6, the waste will be that part marked D, Fig. 6.

The clippings D are not a total waste, but may be utilized for various purposes.

The machine to be employed to cut blanks from the plates shown in Figs. 5 and 6 is similar to the machine used to out large nails from plates. The cutters willbe in two parts, one cutter to out on the lines a a a a and the other to cut astraight line b, (for Fig. 5.) After cutting a blank from the .plate the plate is turned over. right hand to left, and another blank is out. After cutting the blanks from plate Fig. 5 they are then cut on the dotted lines shown in Fig. 5, which cuts off the wastepiece D. This out forms the point 61 of the shank A. The blanks are then heated redhot and placed in a clamping-die, (to be hereinafter described,) which die forms the blank to a shape shown in Fig. 3, and while in the clamp-die the shank A is twisted (by machinery hereinafter described) at the dotted line, putting the edge of shank A in line with the fiat part of hook O. The point d is then bent over to the center of the shank A, as shown in Fig. 4. Thehook C is then turned to shape shown in Fig. at, making a complete and finished pipe-hook.

By the above process pipe-hooks of the largest size may be made from bar or plate, and except of the large size hooks the blanks will only have to be heated when shaping in the die and twisting the center for the shank.

\Vhen cutting blanks from plates Fig. 6, two knives will be used, one in shape of line a a, the other knife in shape of line I). The plate is turned after cutting each blank, as described for Fig. 5.

The blank A, as shown in Fig. '7, is heated red-hot and placed in a proper die, (to be hereinafter described) which holds it while passing under a roller, which roller and die flattens the part O and straightens the part A. to a shape shown in Figs. 8 and 9. The

.part- 0 is then, while cold, bent to form shown in Fig. 10, making a finished pipe-hook. The only heating required is while rolling the part C, except when cutting blanks from thick plates to make large hooks, when it may be required to heat the plates red-hot to cut the blank from thick plates.

My improved machine for shaping, twisting, and rolling the hooks is constructed as follows- Figs. 11, 12, 1S, and 19 show a machine constructed after the form of a metal-planin g machine, having a bed made to slide on shears. This bed is operated bya crank and connecting-rod driven by a pair of bevel-wheels and cone-pulley. The machine is provided with a shaft -E, upon which is mounted a roller F and a spur-wheel G, which wheel gears into a toothed rack H, fastened to the bed WV of the machine. To the bed WV is fixed by countersunk head screws or bolts the bed P. (See Fig. 14.) This bed is fitted for two slides N and 0. (See Figs. 14 and 17.) The slide N carries the twisting-lever R. The slide 0 carries the clamp-plate S. (See Figs. 11 and 16.) The clamp-plate T (shown in Figs. Hand 22) is fastened by screws to the bed H. (See Fig. 11.)

L is a hand-lever. One end is connected to a toggle-joint M. One part of this togglejoint is connected to slide 0, the other part to bed P.

V is a lever. One end is connected to a bracket or stand Y, fastened to the bed WV. The lever Vis connected to lever R at J. The free end of lever V is turned up and rounded at that end as shown in Figs. 12 and 15.

X, Fig. 11., is a loose roller mounted on a stud fixed to the frame of the machine.

f is a roller mounted on a stud fastened to the slide N.

K is a fixedcam fastened to the body of the machine by stands 1) p. The clamp-plate T is made so as not to cover the width of the bed H, (see Fig. 11,) but leave a ledge B, Figs. 20 and 21, represents a steel die, which is to be fastened to the bed WV by countersunk head screws or bolts.

The operation of my improved machine is as follows In shaping and twisting the blanks such as shown in Fig. 2, the blank is heated red-hot and by tongs placed between the clamps S and T, bringing the notch B against the corner h of clamp S, and the shank A will rest on the ledge g of bed H. The hand-lever L is then moved toward the rack H. This closes the clamps S and T. The blank being hot, will readily take the form of the clamps S and T, which will give the blank the form shown in Fig.3. The machine is then started, when the part 0 of the blank will be run under the roller F and the free end of lever V will be raised up by the roller X, which will in turn raise at J the lever R and depress the other end, and it pressing down on the shank A turn it over the ledge g and twist the shank at the dotted line of Fig. 3, and as the lever R passes under the roller F the roller will force the lever down, bringing the edge of the shank in line with the fiat part 0, and as the bed WV moves under the roller F the roller f on slide N Will come against the fixed cam K,

which cam and roller will force .the head of' lever R hard up against the shank A, and the twist will be set. When the bed W has moved the blank from under the roller F, the clamps S and T are opened by the lever L, the blank formed and twisted removed, and another heated blank put in the clamps,

shaped, and twisted, as before described.

To roll the blanks shown in Figs. 7, 8, and 9, the bed P, with its slides and levers L and V, are removed from the bed WV and the steel die B, Figs. 20 and 21, is fixed to the bed WV and so adjusted to the roller F as will cause the roller F to flatten and press the part 0 into the die and form it half-round, as shown in section, Fig. 9, the blank being redhot when placed in the die, and at each stroke of the bed WV the roller F and die B will form a blank the shape shown in Figs. 8 and 9.

It is understood that a pair of clamp-plates S and T are required for each size of blanks,

and hooks made of the form shown in Figs. 2, 3, and 4, and a die B for each size of blank and hooks made in form as shown in Figs. 7, 8, 9, and 10.

The hooks can be made from wroughtdron ora cheap grade of steel, and, as above shown,

1. The process of cutting pipe-hook blanks from a flat metal plate by first cutting the part D to form the heel and point of the next succeeding blank to be cut, as shown and de scribed.

2. The process of cutting pipe-hook blanks from a flat metal plate by first cutting the part D to form the heel of the next succeeding blank to be cut, as shown and described.

3. In a machine for shaping and twisting pipe-hook blanks, the combination of a reciprocating bed carrying a pair of formingclamps, with one of the clamps so fixed to the bed as to form a ledge g, a twisting-lever operating on a slide moved by a lever V and 

